Double-sided aluminum-based copper-clad plate for LED lamp and manufacturing method for double-sided aluminum-based copper-clad plate

Abstract

The invention provides a double-sided aluminum-based copper-clad plate for an LED lamp and a manufacturing method for the double-sided aluminum-based copper-clad plate. The copper-clad plate comprises an aluminum base layer, a first insulating layer and a second insulating layer which are separately arranged on two sides of the aluminum base layer, a first copper foil layer which is arranged on the first insulating layer and is far from one side of the aluminum base layer, and a second copper foil layer which is arranged on the second insulating layer and is far from one side of the aluminum base layer, wherein circuit maps are formed on the first copper foil layer and the second copper foil layer; a plurality of exposed arc-shaped connecting via holes are formed at the circumferential side of the copper-clad plate, and after a third insulating layer is arranged on the inner walls of the connecting via holes, copper is plated on the insulating inner walls for being electrically connected with the first copper foil layer and the second copper foil layer. By adopting the technical scheme provided by the invention, the via holes for electrically connecting upper and lower circuits are formed at the circumferential side of the copper-clad plate and are exposed outside, so that the via holes of an aluminium base plate are prepared without adopting a complex process, and meanwhile, generation of stray capacitance is avoided, thereby further enhancing the anti-interference function of a circuit board.

Description

technical field [0001] The invention relates to the technical field of LED circuit boards, in particular to a double-sided aluminum-based copper-clad laminate for LED lamps and a manufacturing method thereof. Background technique [0002] Aluminum-based copper-clad laminate is one of the key components of LED lamps. In the prior art, there are generally two circuit boards in LED lamps, one is the aluminum-based copper-clad laminate for loading the LED wick, and the other is for driving the LED wick. Drive board, with the continuous development of LED lamps in the direction of high performance and small size, especially in areas with limited internal space such as downlights, two circuit boards are installed inside the lamp to make the inside of the lamp very crowded, which is not conducive to the heat dissipation of the lamp, and Higher requirements are put forward for the design and installation of circuit boards. Double-sided aluminum substrates are used in LED lamps, tha...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned technical solution improves the prior art to a certain extent, and in particular proposes a method for making vias on aluminum substrates. The cost of the aluminum substrate is reduced, so its application in the field of low-cost LED lamps has certain limitations

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